. . "Chicago blues featuring Muddy Waters, Johnnie Lewis, Buddy Guy, Junior Well[s], J.B. Hutto" . . "Traces the evolution of blues music from its origins in the rural south and focuses on its development in the urban environment of Chicago. Interwoven with performances by Muddy Waters and others and interviews with Dick Gregory and others." . . . . "Documentary films" . . . . . . "Interviews" . . . . . "Criticism, interpretation, etc" . . . . "Nonfiction films" . . . .